Hello, syzbot found the following issue on: HEAD commit: 1ec6d097897a Merge tag 's390-6.12-1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=173cdca9980000 kernel config: https://syzkaller.appspot.com/x/.config?x=6265dd30e362bb47 dashboard link: https://syzkaller.appspot.com/bug?extid=645f216781b26a92a732 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12fcb080580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17b76c27980000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-1ec6d097.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0b74fa2b2b4e/vmlinux-1ec6d097.xz kernel image: https://storage.googleapis.com/syzbot-assets/1ed852a3c5d1/bzImage-1ec6d097.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+645f216781b26a92a732@xxxxxxxxxxxxxxxxxxxxxxxxx R10: 0000000000008031 R11: 0000000000000246 R12: 00007ffe75fa944c R13: 431bde82d7b634db R14: 00007ffe75fa9460 R15: 0000000000000001 </TASK> ------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:90! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5134 Comm: syz-executor420 Not tainted 6.11.0-syzkaller-08068-g1ec6d097897a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:page_table_check_clear+0x395/0x550 mm/page_table_check.c:90 Code: c1 0f 8c 57 fd ff ff 48 89 df e8 26 25 f3 ff e9 4a fd ff ff e8 cc 66 8a ff 90 0f 0b e8 c4 66 8a ff 90 0f 0b e8 bc 66 8a ff 90 <0f> 0b e8 b4 66 8a ff 90 0f 0b e8 ac 66 8a ff 90 0f 0b f3 0f 1e fa RSP: 0018:ffffc90002cdf1a0 EFLAGS: 00010293 RAX: ffffffff820a4e24 RBX: ffff88801b8c8098 RCX: ffff888000650000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: 00000000ffffffff R08: ffffffff820a4c86 R09: 1ffff11003719013 R10: dffffc0000000000 R11: ffffed1003719014 R12: 0000000000000000 R13: ffff88801b8c8050 R14: 00000000000001fe R15: 1ffffffff3483da4 FS: 0000555555871480(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5df7332584 CR3: 0000000011c16000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> page_table_check_pmd_clear include/linux/page_table_check.h:57 [inline] pmdp_huge_get_and_clear arch/x86/include/asm/pgtable.h:1390 [inline] pmdp_huge_get_and_clear_full include/linux/pgtable.h:636 [inline] zap_huge_pmd+0x940/0xc40 mm/huge_memory.c:2071 zap_pmd_range mm/memory.c:1719 [inline] zap_pud_range mm/memory.c:1768 [inline] zap_p4d_range mm/memory.c:1789 [inline] unmap_page_range+0x762/0x40e0 mm/memory.c:1810 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1900 unmap_region+0x214/0x380 mm/vma.c:354 mmap_region+0x22f9/0x2990 mm/mmap.c:1573 do_mmap+0x8f0/0x1000 mm/mmap.c:496 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5df72dce29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe75fa93f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007ffe75fa9410 RCX: 00007f5df72dce29 RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 0000000000000002 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007ffe75fa944c R13: 431bde82d7b634db R14: 00007ffe75fa9460 R15: 0000000000000001 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:page_table_check_clear+0x395/0x550 mm/page_table_check.c:90 Code: c1 0f 8c 57 fd ff ff 48 89 df e8 26 25 f3 ff e9 4a fd ff ff e8 cc 66 8a ff 90 0f 0b e8 c4 66 8a ff 90 0f 0b e8 bc 66 8a ff 90 <0f> 0b e8 b4 66 8a ff 90 0f 0b e8 ac 66 8a ff 90 0f 0b f3 0f 1e fa RSP: 0018:ffffc90002cdf1a0 EFLAGS: 00010293 RAX: ffffffff820a4e24 RBX: ffff88801b8c8098 RCX: ffff888000650000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: 00000000ffffffff R08: ffffffff820a4c86 R09: 1ffff11003719013 R10: dffffc0000000000 R11: ffffed1003719014 R12: 0000000000000000 R13: ffff88801b8c8050 R14: 00000000000001fe R15: 1ffffffff3483da4 FS: 0000555555871480(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5df7332584 CR3: 0000000011c16000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
